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首页> 外文期刊>IEEE Transactions on Magnetics >Coercivity mechanism and microstructure of (Co/Pt) multilayers
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Coercivity mechanism and microstructure of (Co/Pt) multilayers

机译：（Co / Pt）多层的矫顽力机理和微观结构

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The coercivity mechanism of (Co/Pt) multilayers with high H/sub c/ and high squareness fabricated by sputtering is mainly due to the wall pinning rather than the nucleation process. In order to estimate the size of a wall-pinning site, a study of the temperature dependence of the coercivity, perpendicular magnetic anisotropy, and saturation magnetization for multilayers fabricated under various substrate conditions has been carried out. The size r/sub 0/ of the pinning sites of about 4 AA was obtained for the multilayer film deposited onto an etched SiN/sub x/ film. The size r/sub 0/ increases with less interface-sharpness, which was confirmed by X-ray low angle diffraction. This implies that the pinning site is closely related to the interfacial region. An inhomogeneity near the interface between Co and Pt is believed to play a major role as pinning for a wall motion. This result is compared to the case of Tb/sub 26/(FeCo)/sub 74/ films, where the size is found to be about 60 AA approximately 250 AA.
机译：通过溅射制备的具有高H / sub c /和高矩形度的（Co / Pt）多层的矫顽力机理主要是由于壁钉扎而不是成核过程。为了估计壁钉扎点的大小，已经进行了在各种基板条件下制造的多层的矫顽力，垂直磁各向异性和饱和磁化强度的温度依赖性的研究。对于沉积在蚀刻的SiN / sub x /膜上的多层膜，获得大约4AA的钉扎位点的大小r / sub 0 /。 r / sub 0 /的大小随着界面清晰度的降低而增加，这已通过X射线低角度衍射得到了证实。这意味着固定位置与界面区域密切相关。据信，Co和Pt之间界面附近的不均匀性在钉扎壁运动中起着重要作用。将该结果与Tb / sub 26 /（FeCo）/ sub 74 /膜的情况进行比较，发现其尺寸为约60 AA约250 AA。

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